Trolley-wheel.



No. 849,262. PATENTED 41 11.2, 19.07.

' G. B. NUSSBAUM.

.TROLLEY WHEEL;

APPLICATION FILED DEC. 6, i906.

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GEORGE B. NUSSBAUM, OF NEW PHILADELPHIA, OHIO, ASSIGNOR OF ONE- HALE TO JOHN THURMAN MILAR, OF NEW PHILADELPHIA, OHIO.

TROLLEY-WHEEL.

Specification of Letters Patent.

Patented April 1907.

Application filed December 6, 1906. Serial No. 346,645.

To all whom it may concern:

Be it known that I, GEORGE B. N UssBAUM, a citizen of the United States, residing at New Philadelphia, in the county of Tuscarawas and State of Ohio, have invented anew and useful TrolleyW heel, of which the following is a specification.

This invention relates to trolley-wheels for the overhead conductors of electric-railway cars and similar devices, and has for its obj ect to provide a trolley the wheel of which is pivotally mounted for lateral movement on the trolley-head, whereby the same will readily follow the conductor in traveling around curves and passing over switches.

A further object is to provide a harpsupporting frame having an opening formed therein for the reception of the adjacent end of the trolley-pole, so that the frame, together with the trolley-wheel, is free to tilt or rock on said pole, and thus prevent undue fric tion on the trolley-wheel in case of excessive vibration of the car.

A further object is to limit the rocking movement of the harp-supporting frame and to provide means for attaching the operatingrope to said frame.

A still further object of the invention is to generally improve this class of devices, so as to increase their utility, durability, and efficiency.

With these and other objects in view the invention consists in the construction and novel combination and arrangement of parts hereinafter fully described, and illustrated in the accompanying drawings, it being understood that various changes in form, proportions, and minor details of construction may be resorted towithin the scope of the appended claims.

In the accompanying drawings, forming a part of this specification, Figure 1 is a side elevation of a trolley constructed in accordance with my invention. Fig. 2 is a longitudinal sectional view of the same.

Similar numerals of reference indicate cor responding parts in all of the figures of the drawings.

The improved device comprises a harpsupporting frame 5, provided with a depending extension 6, having a socket 7 formed therein for the reception of the reduced end or journal 8 of the trolley-harp 9.

Mounted for rotation in the harp 9 is a trolley-wheel 10 of any approved construction and adapted to engage the overhead wire or conductor 11, as shown.

The harp-supporting frame 5 is provided with a lateral extension 12, having a longitudinal bore 13 formed therein for the reception of a pin 14, the latter being seated in a socket 15 in the trolley-pole 16. The pin 14 is rigidly secured to the trolley-pole 16 and is provided at its free end with an enlarged head 17, which engages the Walls of a correspondingly-shaped opening 18, formed in the extension 12, so that the harp-supporting frame is free to rock on the pin 14, and thus prevent undue friction 011 the trolley-wheel in case of excessive vibration of the car. Attention is here called to the fact that the extension 12 and head 17 are cut away to conform to the shape of the wheel 10, so as to permit free rotation of the latter.

-As a means for limiting the rocking movement of the trolley-supporting frame 5 the free end of the extension 12 is formed with a laterally-extending lug 19, which engages a segmental slot 20, formed in the adjacent end of the trolley-pole 16 so that the lug by engagement with the opposite shoulders of the slot or recess 20 will limit the movement of said frame. The ournal 8 is provided with a threaded extension 21, on which is mount ed a laterally-extending arm 22, having itsfree end formed with a terminal eye or loop 23 for the reception of the operatingcord 24, the latter being extended upwardly on each side of the supporting-frame e and passed through an opening 25, formed in the extension 12 adjacent the recess or socket 18, as shown. By passing the rope or cable through the eye 23 and securing the same to the extension 12 the tension of the rope will have a tendency to center the trolley-wheel with respect to the overhead conductor and cause the same to automatically return to normal position after the wheel has been deflected laterallyin traveling around curves or for any other reason. The rope-supporting arm 22 is clamped in position on the threaded extension 21 by means of one or more clamping-nuts 26, which engage the threads on the extension 21 and bear against the arm 22, thus effectually locking said arm in position on the extension.

In order to' prevent accidental displacement of the journal 8, a locking-pin 27 is extended transversely through the lower end of said journal with its opposite ends bearing against the base of the socket 7, as shown.

It will thus be seen that the trolley-wheel, together with the harp 9, is'free to move laterally on the supporting-frame" 5, so as to accommodate any irregularities in the overhead conductor and also to permit the trolley-wheel to follow the conductor in traveling around curves or going over switches, thus preventing the wheel from slipping off the conductor. It will also be observed that any vibration of the car will cause the harpsupporting frame 5 to tilt or rock on the pin 14, so as to prevent undue friction between I the trolley-wheel and conductor, and thus I prevent what is known as a flat wheel.

From the foregoing description it will be seen that there is provided an extremely simple, inexpensive, and efficient device admirably adapted for the attainment of the ends in view.

Having thus described the invention, what is claimed is 1. In a trolley, a pole provided with a recess, a harp-support pivotally mounted for rocking movement on the pole and having a socket formed in one end thereof, a harp journaled in the socket and provided with a trolley-wheel, an arm. extending from one end of the harp-support and provided with a terminal eye, an operating-rope secured to the harp-support and extending through the eye in the arm, and a lug carried by the harpsupport and adapted to engage the walls of the recess in the trolley-pole for limiting the rocking movement of the harp-support.

2. In a trolley, a pole, a harp-support pivotally mounted for rocking movement on the pole and having a longitudinal bore formed therein for the reception of said pole, there being an opening formed in the support above the longitudinal bore, a harp mounted for rotation on the support and provided with a 5 trolley-wheel, a threaded extension depending from the harp, a laterally-extending arm engaging the extension and provided with a terminal eye, clamping-nuts engaging the threads on the extension and bearing against the arm, and an operating-rope passing through the opening in the harp-support and threaded through the eye in the laterallyextended arm.

3. In a trolley, a pole provided with a segmental recess, a harp-support pivotally mounted for rocking movement on the pole and provided with a laterally-extending lug adapted to engage the walls of the segmental slot for limiting the rocking movement of the support, a harp journaled on the support and provided with a trolleywheel, an arm extending laterally from the harp and having an eye formed in one end thereof, and an operating-rope secured to the harp-support and extending through the eye in the laterally-extending arm.

4. In a trolley, a harp-support provided with a longitudinal bore and having a socket disposed at one end of the bore, a trolleypole seated in said bore and provided with a laterally-extending head engaging the walls of the socket, there being a segmental. recess formed in the trolley-pole, a lug extending laterally from the harp-support and engaging the walls of the recess for limiting the rocking movement of the harp-support, a harp j ournaled in the support and provided with a trolley-wheel, said head and support being cut away to accommodate the trolley-wheel, an arm extending laterally from the harp and provided with a terminal eye, and a rope secured to the harp-support and passing through the eye in the arm.

5. In a trolley, a pole having a segmental recess formed therein, a pin rigidly secured to the pole and having its free end formed with an enlarged head, a harp-support pivotally mounted for rocking movement on the pin and having a socket for the reception of the head of the pin, there being an opening journaled in the harp-support at a point adj acent the head of the pin, a lug extending laterally from one end. of the harp-support and adapted to engage the walls of the recess for limiting the lateral movement of said harp-support, a trolley-harp mounted for rotation on the support and. provided with a trolley-wheel, an extension formed on the harp, a laterally-extending arm carried by the extension and provided with a terminal eye, and an operating-arm passing through the opening in the harp-support and engaging the walls of the eye, said harp-support being cut away to permit rotation of the trolley-wheel.

6. In a trolley, a trolley-pole having a socket formed in one end thereof and provided with a segmental recess, a pin rigidly secured to the pole and seated in said socket, said pin being provided with an enlarged head, a harp-support pivotally mounted for rocking movement on said pin and having a socket for the reception of the head of the pin, there being an opening formed in the harp-support at a point adjacent the socket, a lug extending laterally from the harp-support and adapted to engage the walls of the recess for limiting the rocking movement of the harp-support, a harp journaled in the support and provided with a trolley-wheel, an arm carried by the harp and provided with a terminal eye, and an operating-rope passing through the opening in the harpsupport and engaging the walls of the eye.

In testimony that I claim the foregoing as my own I have hereto aflixed my signature in the presence of two witnesses.

GEORGE B. NUSSBAUM. I/Vitnesses W. S. ENGLISH, CHAS. W. EOKERT. 

